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- Title
Experimental study of the dynamics and macrostructure of laser-induced high-pressure dust gas-plasma flows.
- Authors
Loktionov, E.; Protasov, Yu.
- Abstract
We propose and for the first time experimentally carry out a method of laser-induced generation of high-pressure dust gas-plasma flows with complex chemical and ionization composition under UV laser ablation of a polymer matrix containing the dust component. The method uses the difference in the spectral-energy threshold of laser ablation and optical properties of polymer materials and dust components in the short-wavelength region of the spectrum. We present the results of an experimental study of the dynamics and macrostructure of laser-induced high-pressure dust gas-plasma flows under UV (λ = 213 nm, λ = 266 nm, λ = 355 nm) laser ablation of condensed targets based on a (CF) polymer matrix with a dust component (SiO, AlO, CeO). Using laser interferometry and shadowgraphy, we determined the spectral-energy thresholds and conditions for generating dust structures in ionized pairs of the target matrix and their spatiotemporal localization in a gas-dust flow up to spatial division of the evaporated substance of the target matrix and the dust-component cloud. We determine the lifetimes of heterophase flows as a function of the parameters of laser action on a condensed target and the charge of dust particles.
- Subjects
LASER fusion; IONIZATION (Atomic physics); LASER interferometry; SPECTRAL energy distribution; PLASMA lasers
- Publication
High Temperature, 2011, Vol 49, Issue 1, p36
- ISSN
0018-151X
- Publication type
Article
- DOI
10.1134/S0018151X11010123